Malicious PDF — malware analysis report

Static analysis result for SHA-256 0715e93be3d7c31e…

MALICIOUS

PDF

86.4 KB Created: 2021-05-06 16:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 0e6b4f818a4041649089f35203ed8c7b SHA-1: 2ac048bc6e6babd97399e076fc8c369f525e9e67 SHA-256: 0715e93be3d7c31eec7f0a3bcfa6a4ea86b878d0dd303626bf74dbbc81c4109b
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains numerous embedded links, with several pointing to unknown or potentially malicious domains. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a deliberate attempt to create a link farm on disposable hosting, suggesting a phishing or malware distribution scheme. The ML classifier and ClamAV detection further support the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://xajibur.ru/strik?utm_term=colt+ar+15+manual+pdf PDF link annotation
    • http://padlamadla.site/661032440756kbwj.pdfIn PDF document text
    • https://cdn.sqhk.co/jalosemuv/jevhjid/bmx_boy_apkmonk.pdfIn PDF document text
    • https://cdn.sqhk.co/dagozuwemep/bhfj3rj/57253634685.pdfIn PDF document text
    • http://moitender.org/do_turtle_beach_headphones_work_on_ps4_and_xbox_oneyxq7x.pdfIn PDF document text
    • http://thedouche.xyz/verbs_past_tense_list_regular_and_irregularry793.pdfIn PDF document text
    • http://pelabinowoguk.getenjoyment.net/dokomevofawokoj.pdfIn PDF document text
    • http://betijeduw.getenjoyment.net/digital_marketing_strategy_for_travel_agency.pdfIn PDF document text
    • http://eliyalte.com/le_spleen_de_parisks0ws.pdfIn PDF document text
    • https://cdn.sqhk.co/moviferu/hizThe1/gefofokibixogox.pdfIn PDF document text
    • http://vonoxafaku.scienceontheweb.net/genetic_algorithm_essentials.pdfIn PDF document text
    • http://cashtanks.fun/albury_wodonga_community_college_annual_reportjz4h5.pdfIn PDF document text
    • http://getveran.site/shure_ulxd2_b58_g518iekf.pdfIn PDF document text
    • https://cdn.sqhk.co/suxupijisajo/1CAQidT/rediriparokirituxuguvogo.pdfIn PDF document text
    • http://getcreditreport.info/20521883524rykk5.pdfIn PDF document text
    • http://visiblawty.com/john_dewey_high_schoolcl90v.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c7f65728-e1ad-45f0-9a76-b1874f48511e/how_do_you_reset_a_verizon_4g_lte_tablet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e9489418-bf7a-4ada-8f56-06e133b95365/elementary_differential_equations_and_boundary_value_problems_9th_edition_solutions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fced3d7-d755-44fd-8ff6-280328fccdae/does_walmart_carry_bass_pro_gift_cards.pdfIn PDF document text
    • http://fepusum.onlinewebshop.net/23319616098.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e6e3aac-5569-4d61-8a60-2bff8531d192/fountainhead_writer_ayn.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4cf0214a-b599-4df0-ab31-459e94810dc2/37619737969.pdfIn PDF document text
    • http://nononulavojiki.myartsonline.com/six_flags_magic_mountain_map.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000113e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113E6 5092 bytes
SHA-256: 899ce558b136cc897d4d08f783860114a42dbf687264dc888e817b1c4d835493
font_01_sfnt_off00012528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12528 11748 bytes
SHA-256: 6cb98d7d10b20a0433e47400a9e7ecc6a7c0e37b1eb2bd361c9ea2696f824492

Open this report in the interactive analyzer, or submit your own file for analysis.